Removable cutting device



EAST-$70 June 10, 19249 ,W. W. GALBREATH REMOVABLE CUTTING DEVICE FiledJan. 19-. 1-92: V s Sheets-Sheet 1 9 240 V l M j w. w. GALBREATH v I vREMOVABLE'CUTTING DEVICE I Filed Jan. 19. 1923 s Sheets-Sheet 2 5mm 10,19% r 1,497,370

- w. w. GALBREATH REMOVABLE CUTTING DEVICE Filed Jan. 19, 192 3 3Sheets-Sheet 5v Patented am 10, 1924.

UNETED. STATES newt WILLIAM W. GALBBEATH, OF WARREN, OHIO, STEEL (30.,OF lKfAIRtRElI, OHIO, A

ASSIGNOR TO Y'J'UNG-S'll'OW'IN' PRESBW CORPORATION OF 0H0.

REMOVABLE CUTTING DEVICE.

Application filed January 19, 1928. Serial No. 613,674.

T 0 all whom it may concern:

Be it known that I, WILLIAM W. GAL- BREATH, a citizen of the UnitedStates, residing at Warren, in the county of Trumbull and State of Ohio,have invented a new and useful Improvement in Removable Cutting Devices,of which the following is a specification.

The present invention relates to improvements in cutting devices, andmore particularly to such devices in which cutting members are mountedon co-operating shafts, the material to be operated upon passingtherebetween. It will be fully understood from the followingdescription, illustrated by the accompanying drawings, in which is shownan embodiment of the invention suitable for use in forming cuts or slitsin metal sheets or blanks previous to forming the same into expandedmetal lath. In the drawings Figure 1 is a plan view, partly in section,of such a device;

Fig. 2 is an end elevation of the device shown in Fig. 1 from thefeed-table side, the feed table having been removed, and

Fig. 3 is a vertical section on the line 3-3 of Fig. 2.

In the form, of construction illustrated in the drawings, the cuttershafts are mounted at their ends in bearing or journal blocks, which aresuitably adjustably mounted in a removable frame which is secured to thebed plate or support so as to be readily movable into and out ofposition and also so as to be quickly and precisely set into a properposition. The construction is particularly adapted for use in deviceswhere replacement of cutters is occasionall necessary, the removal ofone frame w1th its assembled cutters and its replacement by anotherbeing readily and rapidly accomplished.

Referring more particularly to the drawings, the numeral 5 indicates abed plate or support upon which the cutter unit is mounted. Upon this,bed plate 5 rests the removable frame or mounting for the cutters, thisframe being indicated by the numeralfi. The lower portion of this frameis formed by a base plate 7, which, in the embodiment illustrated, liesin a substantially horizontal plane. At the ends of this base late, andpreferably formed in tegrally t erewith, are the vertical side members8. The side members 8 at each end of th frame 6 are formed on theirinner surfaces to provide bearing surfaces or slides for the journal orbearing-blocks carrying the cutter shafts, all fully referred tohereinafter. Viewed from either end, the vertical side members with thehorizon tal base plate of the frame 6 form a substantially U-shapedconstruction. The side members 8 on each side of the. frame are spacedapart a sufficient distance to permit the feed of material to thecutters. A top plate 9 extends across the top of the frame 6 and issecured to the side members 8 of the latter by any suitable means, forexample, by the bolts 10. The means by which the frame 6 is secured tothe bed plate 7 will be hereinafter set forth.

The journal or bearing blocks for the cutter shafts are formed to fitslidably between the side pieces 8 of the frame 6. The lower journalblocks 11 are formed with their lower surfaces angularly inclined, asshown at 11 in Fig. 2. The angle of the lower surfaces of the two lowerjournals 11 are substantially the same, but oppositel directed. Betweenthe journals 11 an the base plate 7 of the frame 6 are slidably mountedthe wedge-shaped members 12, the angles of inclination of the uppersurfaces of which correspond to the angles of inclination 11* of thelower surfaces of the journals 11. Adjustment of the positions of thewedge members 12 along the base plate 7 effects a vertical adjustment ofthe lower journals 11. A suitable means for effecting the adjustment ofthe wedge members 12 is illustrated in the drawings.

Each of the wedge members 12 is provided with an upstanding car 13.Between the two wedge members 12 a U-shaped member 14 is secured to thebase plate 7 of the frame 6. A bolt 15, the opposite ends of which areprovided witlt threads of equal pitch running in opposite directions,passes through, the sides of the stationary member 14 and through theears of the wedge members 12, these ears being tapped and threaded toreceive the threads on the bolt 15. Between the side members of thestationary U-shaped member 14, a turnbuckle or head 16 is secured to thebolt 15. By rotating the turnbuckle or head 16, the Wedge members 12 aremoved simultaneously and e ual- 1y outwardly or inwardly, a corresponvertical movement of both lower journals 11 being thereby produced.

a The upper journals 17 are adjustably supported above the lowerjournals 11, preferably b suspending them from the top plate 9 of tieframe 6. Suitable means for this purpose are illustrated in Fig. 2. Abolt 18 passes freely through an opening 19 in the top plate 9 andscrews into a threaded opening 20 in the journal 17. At each side of thebolt 18, a bolt 21 passes through a suitable threaded opening in the topplate 9, its lower end being seated against the upper surface of thejournal 17, suitably against a hardened plate 22" in a socket 22.

The bolts 21 are locked in position by nuts 23. By suitable adjustmentof the bolts 18 and 21 the position of the upper journals 17 may beprecisely determined.

The cutter shafts 24 pass through the-respective pairs of u per journals17 and lower journals 11. n the cutter shafts are suitably mounted thecutting devices, which, in the form illustrated, are preferablyremovably secured to the shafts. As the specific form of the cuttingelements is not a part of the present invention, it is not furtherhereinafter referred to.

The frame 6 is held in position upon the bed plate 5 in a mannerpermitting its ready removal and replacement, suitable means for thispurpose being illustrated. At the base of the frame 6 and projectingfrom one side therefor are lugs 26, which are provided with slots 27 0en at the sides. Bolts 28 having their hea s 29 loosely held in suitablecavities 30, formed for-the purpose in the bed plate 5, project upwardlyand pass through the slots 27 in the lugs 26. Nuts 28 threaded on theprojecting ends of the bolts 28 aid in holding the frame 6 in position.At each side of the bed plate 5 there are mounted (preferably formedintegrally with the bed plate) the buttress members 31 and 32. Throughthe upper end of each of these buttress members a set screw 33 isthreaded, its

end impinging against a suitable boss 34 formed on the side of the frame6. The set screws are locked by the lock nuts 35.

In theform illustrated in the drawings,

the cuttin unit is shown as assembled with a feed ta le 36 and areceiving table 37. The shafts 38 are geared together, and the gears onthe shafts 38 mesh with gears 39 and 40 mounted respectively on oppositeends of the upper and lower cutter shafts 24. Drive is applied to one ofthe shafts 38, in the form illustrated, the lower.

The feed table 36 is provided at its end with a grooved projection 41.This grooved projection engages or interlocks with a grooved ledge 42 ona guide member 43 suitably secured, for example, by bolts 44 to the sidemembers 8 of the frame 6. This guide. member is provided with a guideslot 45 through which the metal blanks or other material is fed to thecutters. The feed table portion 36 may be disengaged from the cutterunit by lifting its projecting end 41 from the ledge 42.

At the exit side of the cutter unit suitable strippers may be mountedupon it. In the form illustrated, the support for the strippers isformed as a casting 47 the casting being formed with spaced transversemembers 48, the space between these members serving as a guide for theoutgoing slitted or cut blanks. The transverse members 48 formrespectively the lower and upper halves of the mountings for thestrippers for for the upper and lower cutters. A bar 49 is mounted oneach of the transverse members 48. The bars 49 are held in position byco-operating transverse members 50 which are bolted to the transversemembers 48 of the casting 47 by means of suitable bolts 51. Thestrippers 52 are mounted upon the transverse bars 49 and project betweenthe cutting elements on the cutter shaft 24. The casting 47 with theassembled strippers is secured to one of the side members 8 of the frame6 by any suitable means, for example, the bolts 53, and is removabletherefrom as a unit.

The cutter unit may he removed from the assembly in the followingmanner. The feed table 36 is removed, being, in the form illustrated.lifted out of engagement with the shoulder 42. The set screws 33 on thebuttress members 31 and 32 are unscrewed sufiiciently to permit thecutter frame 6 to be moved until the gears 39 and 40 are disengaged fromthe gearing of the feed rolls 38. The nuts of bolts 28 having previouslybeen loosened, the play of the bolts in the bed plate 5 is suflicient topermit the bolts to be turned down out of the way of the lugs 26. Withthese bolts out of the way, the entire cutter frame with the cutters maybe removed for example, by means of the eye 54 secured to the top plate9.

In order to remove the cutters from the frame, the bolts 10 securing thetop plate of the latter are removed, as are also the bolts 18 holdingthe upper bearings 17. If the strippers are present in the assembly.these may previously be removed as a unit, the bolts 53 being loosenedfor this purpose. Similarly. the feed guide 43 may be removed byloosening the nuts 44. \Vith the top plate 9 removed, the cutter shaftswith the end bearing blocks may be removed bodily from the frame 6. Newcutter units in other end bearings of similar form may then be insertedin the frame, the top plate 9 again secured to the frame and the cutterunit returned in its entirety to the assembly. By means of the wedgeadjusting members 12 for the lower cutter bearings and the adjustingscrews 18 and 21 for the upper cut ter bearings, the relative positionsof the two (utters may then be properly fixed The cutter unit is thenmoved into position such that the gears 39 and 40 reengage the gearingof the feed rolls 38, the set screws 32 are screwed down and locked andthe bolts 28 are properly positioned and tightened. The feed guide 43and the stripper casting 47 are assembled with the cutter unit previousto its return to position. The proper adjustments having been made, thefeed table 36 is returned to position and operation of the device mayproceed.

Although the present invention is described in connection with specificdetails of a form of construction embodying the same, it is not intendedthat these details shall be regarded as limitations upon the scope ofthe invention except in so far as included'in the accompanying claims.

I claim:

1. In a device of the class described, the combination of a fixed bedplate, -a cutter unit including a frame removably seated on said bedplate, cutters'mounted in said frame, and means secured to the bed plateand engaging the frame at one side thereof for buttressing the frameinto position.

2. In a device of the class described, the combination of a fixed bedplate, a cutter unit including a frame seated on said bed plate,fastening devices engaging the fram'e at one side thereof for securingit to the bed plate, andbuttress members secured to the bed plate andengaging the frame to hold it in position. i

3. In a device of the class described, the combination of a fixed bedplate, a cutter unit including a frame seated on said bed pla te',' lugsprojecting from the base of the frame at one side thereof, fasteningmeans operable upon said lugs to secure the frame in position, buttressmembers secured to the bed plate at one side of the frame and adjustingscrews passing through the buttress members and engaging the frame.

4. In a device of the class described, the combination of a fixed, bedplate, a cutter unit including and a removable frame secured on said bedplate, said frame having a base plate, side members rising from saidbase plate at each end thereof, a topplate secured to the side members,bearing blocks slidably mounted between the side members at each end ofthe frame and cutters arranged between the side members of the frame,said cutters being journalled in said bearing blocks.

5. In a device of the class described, the combination of a fixed bedplate, a cutter unit including a frame removably secured on said bedplate, said frame including a base plate, side members rising from saidbase plate at each end thereof, a top plate mounted on the side members,bearing blocks slidably mounted between the side members of the frame ateach end of the latter, the lower surfaces of said blocks being annlarly inclined in opposite directions, we ge members slidablelengthwise of the base plate within the frame under said blocks, meansfor moving the wedge members simultaneously to effect adjustment of thebearing blocks, and cutters arranged within the frame said cutters beingjournalled in said blocks.

6. In a device of the class described, the combination of a fixed bedplate, a cutter unit including a frame removably secured on said bedplate, said frame including a base plate, side members rising from thebase plate at each end thereof, superposed bearing blocks slidablymounted between said side frames at each end of the frame, the

' lower bearing blocks having their lower surfaces angularly inclined inopposite directions, wedge members slidably mounted within said frame,means for moving said wedge members simultaneously below the lowerbearing blocks to efiect vertical adjustment thereof, a top plate forsaid frame mounted on the side members, means se-- cured to the topplate for adjustably positioning the top bearing blocks and cutterswithin the frame, and cutters journalled in said bearing blocks.

*i-s7- In a device of the class described, the

combination of a fixed bed plate, a cutter unit including a frameremovabl seated on said bed plate, cutters mounte in said frame, aunitary member forming a feed guide secured to said frame and meansforming part of said member for supporting the end of a feed table inproper position for feeding to said guide.

8. In a device of the class described, the combination of a fixed bedplate, a cutter unit including a frame removabl seated on said bedplate, cutters mounte in said frame, a unitary member forming a feedguide secured to said frame, a grooved ledge formed. on said feedguide-member, and a feed table section having a grooved projectioninterlocking with said led e.

9. In a device of the class described, the combination of a fixed bedplate, a cutter unit including a frame seated on said bed plate, saidframe includin a base plate, side members rising from tie base plate ateach end thereof and a top plate secured to the side members, superposedbearing blocks slidably mounted between the side members of the frame ateach end thereof, means mounted in said frame for adjustably positioningthe upper and lower blocks independently of each other, cuttersjournalled in said bearing blocks, lugs projecting from the base plateof the frame at one side thereof, fastening means secured to the bedplate and co-operating with said lugs; buttress members secured to thebed late at the same side of the frame as the lbgs and set screws in thebuttress members engaging the frame.

10. A cutter unit comprising a frame, bearing blocks removably mountedin said frame, superposed cutters mounted in said bearing blocks, aunitary feed guide member removably secured to one side of the frame andprovided with a guiding slotted member projecting between the cutters,and a unitary stripper member removably secured to the other side of theframe and provided with spaced strippers projecting between the cutters.

11; In a cutter unit, a stripper member comprising spaced transversemembers, cooperating transverse members removably secured thereto onopposite sides thereof, bars removably mounted between the firstmentioned transverse members and the co-operating transverse members andstrippers supported on said bars.

12. In a device of the class described, the combination of a fixed bedplate, a fixed support rising therefrom, a driving gear journaled insaid support, a cutter unit removably seated on said bed platecomprising a frame, cutters mounted in said frame, a driven ear carriedby said frame for actuation 0 said cutters said driven gear meshing withsaid drivin gear when said unit is in place on-said be plate.

13. In a device of the class described, the combination of a fixed bedplate, a cutter unit removably seated thereon comprisin a frame,parallel shafts journaled 1n sai frame, cutters mounted on said shafts,driven gears on alternate ends of said shafts, fixed supports risingfrom said bed plate parallel driving shafts journaled in said supports,driving gears on said driving shafts and normally meshing with saiddriven gears, and means to drive said driving gears.

14. In a device of the class described, the combination of a bed plate,a support projecting therefrom, a driving gear ournaled upon saidsupport, a cutter unit comprising a frame having a base plate andsupports projecting therefrom, cutters journaled in said supports, adriven gear for actuating one of said cutters meshing with said drivinggear when the frame is in place upon the bed plate, a buttress projecting from said bed plate in spaced relation to said first namedsupport, means carried by said buttress engaging saiddrivengear-carrying support closely adjacent a point in the common planeof the axes of the said gear.

WILLIAM W. GALBREATH.

